The lower triangle is too small to be the same as the front button.

< html > 

<head>
    <meta charset="UTF-8">
    <title></title>
    <link rel="stylesheet"  href="../css/bootstrap.min.css">
    <link rel="stylesheet"  href="../css/bootstrap-theme.min.css">    
</head>
<body>
    <div class="container">
        <div class="btn-group">
            <button class="btn btn-warning" type="button" ></button>
            <button class="btn btn-warning dropdown-toggle" type="button" 
            id="dropdown1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                <span class="caret"></span>
                <span class="sr-only"></span>
            </button>
            <ul class="dropdown-menu" aria-labelledby="dropdown1">
                <li><a href="-sharp"></a></li>
                <li><a href="-sharp"></a></li>
                <li><a href="-sharp"></a></li>
                <li role="separator" class="divider"></li>
                <li><a href="-sharp"></a></li>
            </ul>
        </div>
        
        
        <div class="btn-group">
            <button class="btn btn-danger" type="button" ></button>
            <button class="btn btn-danger dropdown-toggle" type="button" 
            id="dropdown2" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                <span class="caret"></span>
                <span class="sr-only"></span>
            </button>
            <ul class="dropdown-menu" aria-labelledby="dropdown2">
                <li class="dropdown-header"></li>
                <li><a href="-sharp"></a></li>
                <li><a href="-sharp"></a></li>
                <li><a href="-sharp"></a></li>
                <li class="dropdown-header"></li>
                <li><a href="-sharp"></a></li>
            </ul>
        </div>
    </div>
    <script text="javascript" src="../js/jquery-3.3.1.min.js"></script>
    <script text="javascript" src="../js/bootstrap.min.js"></script>
</body>

< / html >

Html5
May.26,2022
The box of

arrow increases the height

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3890f-2c10b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3890f-2c10b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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